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kumquat-buildroot/package/uclibc/uclibc.mk
Thomas Petazzoni dcb74db89e arch: add support for configurable page size on ARM64 
This commit is based on earlier work from Łukasz Stelmach
<l.stelmach@samsung.com> to add support for different page sizes on
ARM64.

In his initial submission, Łukasz took an approach similar to this
one, i.e make it ARM64-specific. Following the feedback on the mailing
list, his second version [1] tried to generalize the logic to
configure the page size between architectures. But the general
consensus during the review process was that there wasn't much to
generalize in the end.

So, this new iteration is back to a simpler approach:

 * We have new options in Config.in.arm to configure the page
   size. Only 4 KB and 64 KB are supported, because our testing in
   Qemu and real hardware has not allowed to get a successful setup
   for 16 KB pages. We can always re-add support for 16 KB later if
   that is resolved.

 * The logic to define the ARCH_TOOLCHAIN_WRAPPER_OPTS options is
   moved from the ARC-specific file to arch/arch.mk, and extended to
   cover ARM64.

 * The appropriate logic in uclibc.mk and linux.mk is added to tweak
   the relevant configuration options.

 * A test case is added in the runtime test infrastructure to test
   building and booting under Qemu a 64 KB configuration, with all 3 C
   libraries.

For the regular configuration of 4 KB pages, this commit makes one
functional change: on ARM64, -Wl,-z,max-page-size=4096 is now passed in
the compiler flags of the wrapper.

[1] https://patchwork.ozlabs.org/project/buildroot/list/?series=275452

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2022-07-26 22:54:39 +02:00

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################################################################################
#
# uclibc
#
################################################################################
UCLIBC_VERSION = 1.0.41
UCLIBC_SOURCE = uClibc-ng-$(UCLIBC_VERSION).tar.xz
UCLIBC_SITE = https://downloads.uclibc-ng.org/releases/$(UCLIBC_VERSION)
UCLIBC_LICENSE = LGPL-2.1+
UCLIBC_LICENSE_FILES = COPYING.LIB
UCLIBC_INSTALL_STAGING = YES
UCLIBC_CPE_ID_VENDOR = uclibc-ng_project
UCLIBC_CPE_ID_PRODUCT = uclibc-ng
# uclibc is part of the toolchain so disable the toolchain dependency
UCLIBC_ADD_TOOLCHAIN_DEPENDENCY = NO
# Before uClibc is configured, we must have the first stage
# cross-compiler and the kernel headers
UCLIBC_DEPENDENCIES = host-gcc-initial linux-headers
# specifying UCLIBC_CONFIG_FILE on the command-line overrides the .config
# setting.
ifndef UCLIBC_CONFIG_FILE
UCLIBC_CONFIG_FILE = $(call qstrip,$(BR2_UCLIBC_CONFIG))
endif
UCLIBC_KCONFIG_EDITORS = menuconfig nconfig
UCLIBC_KCONFIG_FILE = $(UCLIBC_CONFIG_FILE)
UCLIBC_KCONFIG_FRAGMENT_FILES = $(call qstrip,$(BR2_UCLIBC_CONFIG_FRAGMENT_FILES))
# UCLIBC_MAKE_FLAGS set HOSTCC to the default HOSTCC, which may be
# wrapped with ccache. However, host-ccache may not already be built
# and installed when we apply the configuration, so we override that
# to use the non-ccached host compiler.
UCLIBC_KCONFIG_OPTS = \
$(UCLIBC_MAKE_FLAGS) \
HOSTCC="$(HOSTCC_NOCCACHE)" \
PREFIX=$(STAGING_DIR) \
DEVEL_PREFIX=/usr/ \
RUNTIME_PREFIX=$(STAGING_DIR)/
UCLIBC_TARGET_ARCH = $(call qstrip,$(BR2_UCLIBC_TARGET_ARCH))
UCLIBC_GENERATE_LOCALES = $(call qstrip,$(BR2_GENERATE_LOCALE))
ifeq ($(UCLIBC_GENERATE_LOCALES),)
# We need at least one locale
UCLIBC_LOCALES = en_US
else
# Strip out the encoding part of locale names, if any
UCLIBC_LOCALES = \
$(foreach locale,$(UCLIBC_GENERATE_LOCALES),\
$(firstword $(subst .,$(space),$(locale))))
endif
# noMMU binary formats
ifeq ($(BR2_BINFMT_FLAT_ONE),y)
define UCLIBC_BINFMT_CONFIG
$(call KCONFIG_ENABLE_OPT,UCLIBC_FORMAT_FLAT)
$(call KCONFIG_DISABLE_OPT,UCLIBC_FORMAT_FLAT_SEP_DATA)
$(call KCONFIG_DISABLE_OPT,UCLIBC_FORMAT_SHARED_FLAT)
$(call KCONFIG_DISABLE_OPT,UCLIBC_FORMAT_FDPIC_ELF)
endef
endif
ifeq ($(BR2_BINFMT_FLAT_SHARED),y)
define UCLIBC_BINFMT_CONFIG
$(call KCONFIG_DISABLE_OPT,UCLIBC_FORMAT_FLAT)
$(call KCONFIG_DISABLE_OPT,UCLIBC_FORMAT_FLAT_SEP_DATA)
$(call KCONFIG_ENABLE_OPT,UCLIBC_FORMAT_SHARED_FLAT)
$(call KCONFIG_DISABLE_OPT,UCLIBC_FORMAT_FDPIC_ELF)
endef
endif
#
# AArch64 definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),aarch64)
UCLIBC_ARM64_PAGE_SIZE = CONFIG_AARCH64_PAGE_SIZE_$(call qstrip,$(BR2_ARM64_PAGE_SIZE))
define UCLIBC_AARCH64_PAGE_SIZE_CONFIG
$(SED) '/CONFIG_AARCH64_PAGE_SIZE_*/d' $(@D)/.config
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_ARM64_PAGE_SIZE))
endef
endif # aarch64
#
# ARC definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),arc)
UCLIBC_ARC_PAGE_SIZE = CONFIG_ARC_PAGE_SIZE_$(call qstrip,$(BR2_ARC_PAGE_SIZE))
define UCLIBC_ARC_PAGE_SIZE_CONFIG
$(SED) '/CONFIG_ARC_PAGE_SIZE_*/d' $(@D)/.config
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_ARC_PAGE_SIZE))
endef
ifeq ($(BR2_ARC_ATOMIC_EXT),)
define UCLIBC_ARC_ATOMICS_CONFIG
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_HAS_ATOMICS)
endef
endif
endif # arc
#
# ARM definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),arm)
define UCLIBC_ARM_ABI_CONFIG
$(SED) '/CONFIG_ARM_.ABI/d' $(@D)/.config
$(call KCONFIG_ENABLE_OPT,CONFIG_ARM_EABI)
endef
ifeq ($(BR2_BINFMT_FLAT),y)
define UCLIBC_ARM_BINFMT_FLAT
$(call KCONFIG_DISABLE_OPT,DOPIC)
endef
endif
# context functions are written with ARM instructions. Therefore, if
# we are using a Thumb2-only platform (i.e, Cortex-M), they must be
# disabled. Thumb1 platforms are not a problem, since they all also
# support the ARM instructions.
ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB2):$(BR2_ARM_CPU_HAS_ARM),y:)
define UCLIBC_ARM_NO_CONTEXT_FUNCS
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_CONTEXT_FUNCS)
endef
endif
endif # arm
#
# m68k/coldfire definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),m68k)
# disable DOPIC for flat without separate data
ifeq ($(BR2_BINFMT_FLAT_ONE),y)
define UCLIBC_M68K_BINFMT_FLAT
$(call KCONFIG_DISABLE_OPT,DOPIC)
endef
endif
endif # m68k/coldfire
#
# MIPS definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),mips)
UCLIBC_MIPS_ABI = CONFIG_MIPS_$(call qstrip,$(BR2_UCLIBC_MIPS_ABI))_ABI
define UCLIBC_MIPS_ABI_CONFIG
$(SED) '/CONFIG_MIPS_[NO].._ABI/d' $(@D)/.config
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_MIPS_ABI))
endef
UCLIBC_MIPS_NAN = CONFIG_MIPS_NAN_$(call qstrip,$(BR2_UCLIBC_MIPS_NAN))
define UCLIBC_MIPS_NAN_CONFIG
$(SED) '/CONFIG_MIPS_NAN_.*/d' $(@D)/.config
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_MIPS_NAN))
endef
endif # mips
#
# SH definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),sh)
UCLIBC_SH_TYPE = CONFIG_$(call qstrip,$(BR2_UCLIBC_SH_TYPE))
define UCLIBC_SH_TYPE_CONFIG
$(SED) '/CONFIG_SH[234A]*/d' $(@D)/.config
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_SH_TYPE))
endef
endif # sh
#
# SPARC definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),sparc)
UCLIBC_SPARC_TYPE = CONFIG_SPARC_$(call qstrip,$(BR2_UCLIBC_SPARC_TYPE))
define UCLIBC_SPARC_TYPE_CONFIG
$(SED) 's/^\(CONFIG_[^_]*[_]*SPARC[^=]*\)=.*/# \1 is not set/g' \
$(@D)/.config
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_SPARC_TYPE))
endef
endif # sparc
#
# PowerPC definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),powerpc)
UCLIBC_POWERPC_TYPE = CONFIG_$(call qstrip,$(BR2_UCLIBC_POWERPC_TYPE))
define UCLIBC_POWERPC_TYPE_CONFIG
$(call KCONFIG_DISABLE_OPT,CONFIG_GENERIC)
$(call KCONFIG_DISABLE_OPT,CONFIG_E500)
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_POWERPC_TYPE))
endef
endif # powerpc
#
# x86 definitions
#
ifeq ($(UCLIBC_TARGET_ARCH),i386)
UCLIBC_X86_TYPE = CONFIG_$(call qstrip,$(BR2_UCLIBC_X86_TYPE))
define UCLIBC_X86_TYPE_CONFIG
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_X86_TYPE))
endef
endif
#
# Debug
#
ifeq ($(BR2_ENABLE_DEBUG),y)
define UCLIBC_DEBUG_CONFIG
$(call KCONFIG_ENABLE_OPT,DODEBUG)
endef
endif
#
# Endianness
#
ifeq ($(call qstrip,$(BR2_ENDIAN)),BIG)
define UCLIBC_ENDIAN_CONFIG
$(call KCONFIG_ENABLE_OPT,ARCH_BIG_ENDIAN)
$(call KCONFIG_ENABLE_OPT,ARCH_WANTS_BIG_ENDIAN)
$(call KCONFIG_DISABLE_OPT,ARCH_LITTLE_ENDIAN)
$(call KCONFIG_DISABLE_OPT,ARCH_WANTS_LITTLE_ENDIAN)
endef
else
define UCLIBC_ENDIAN_CONFIG
$(call KCONFIG_ENABLE_OPT,ARCH_LITTLE_ENDIAN)
$(call KCONFIG_ENABLE_OPT,ARCH_WANTS_LITTLE_ENDIAN)
$(call KCONFIG_DISABLE_OPT,ARCH_BIG_ENDIAN)
$(call KCONFIG_DISABLE_OPT,ARCH_WANTS_BIG_ENDIAN)
endef
endif
#
# MMU
#
ifeq ($(BR2_USE_MMU),y)
define UCLIBC_MMU_CONFIG
$(call KCONFIG_ENABLE_OPT,ARCH_HAS_MMU)
$(call KCONFIG_ENABLE_OPT,ARCH_USE_MMU)
endef
else
define UCLIBC_MMU_CONFIG
$(call KCONFIG_DISABLE_OPT,ARCH_HAS_MMU)
$(call KCONFIG_DISABLE_OPT,ARCH_USE_MMU)
endef
endif
#
# IPv6
#
UCLIBC_IPV6_CONFIG = $(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_IPV6)
#
# soft-float
#
ifeq ($(BR2_SOFT_FLOAT),y)
define UCLIBC_FLOAT_CONFIG
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_FPU)
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_FLOATS)
$(call KCONFIG_ENABLE_OPT,DO_C99_MATH)
endef
else
define UCLIBC_FLOAT_CONFIG
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_FPU)
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_FLOATS)
endef
endif
#
# SSP
#
ifeq ($(BR2_TOOLCHAIN_BUILDROOT_USE_SSP),y)
define UCLIBC_SSP_CONFIG
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_SSP)
$(call KCONFIG_ENABLE_OPT,UCLIBC_BUILD_SSP)
endef
else
define UCLIBC_SSP_CONFIG
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_SSP)
$(call KCONFIG_DISABLE_OPT,UCLIBC_BUILD_SSP)
endef
endif
#
# Threads
#
ifeq ($(BR2_PTHREADS_NONE),y)
define UCLIBC_THREAD_CONFIG
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_THREADS)
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_LINUXTHREADS)
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_THREADS_NATIVE)
endef
else ifeq ($(BR2_PTHREADS),y)
define UCLIBC_THREAD_CONFIG
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_THREADS)
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_LINUXTHREADS)
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_THREADS_NATIVE)
endef
else ifeq ($(BR2_PTHREADS_NATIVE),y)
define UCLIBC_THREAD_CONFIG
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_THREADS)
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_LINUXTHREADS)
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_THREADS_NATIVE)
endef
endif
#
# Thread debug
#
ifeq ($(BR2_PTHREAD_DEBUG),y)
UCLIBC_THREAD_DEBUG_CONFIG = $(call KCONFIG_ENABLE_OPT,PTHREADS_DEBUG_SUPPORT)
else
UCLIBC_THREAD_DEBUG_CONFIG = $(call KCONFIG_DISABLE_OPT,PTHREADS_DEBUG_SUPPORT)
endif
#
# Locale
#
ifeq ($(BR2_TOOLCHAIN_BUILDROOT_LOCALE),y)
define UCLIBC_LOCALE_CONFIG
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_LOCALE)
$(call KCONFIG_DISABLE_OPT,UCLIBC_BUILD_ALL_LOCALE)
$(call KCONFIG_ENABLE_OPT,UCLIBC_BUILD_MINIMAL_LOCALE)
$(call KCONFIG_SET_OPT,UCLIBC_BUILD_MINIMAL_LOCALES,"$(UCLIBC_LOCALES)")
$(call KCONFIG_DISABLE_OPT,UCLIBC_PREGENERATED_LOCALE_DATA)
$(call KCONFIG_DISABLE_OPT,DOWNLOAD_PREGENERATED_LOCALE_DATA)
$(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_XLOCALE)
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_GLIBC_DIGIT_GROUPING)
endef
else
define UCLIBC_LOCALE_CONFIG
$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_LOCALE)
endef
endif
#
# wchar
#
ifeq ($(BR2_TOOLCHAIN_BUILDROOT_WCHAR),y)
UCLIBC_WCHAR_CONFIG = $(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_WCHAR)
else
UCLIBC_WCHAR_CONFIG = $(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_WCHAR)
endif
#
# static/shared libs
#
ifeq ($(BR2_STATIC_LIBS),y)
UCLIBC_SHARED_LIBS_CONFIG = $(call KCONFIG_DISABLE_OPT,HAVE_SHARED)
else
UCLIBC_SHARED_LIBS_CONFIG = $(call KCONFIG_ENABLE_OPT,HAVE_SHARED)
endif
#
# Commands
#
UCLIBC_EXTRA_CFLAGS = $(TARGET_ABI)
# uClibc-ng does not build with LTO, so explicitly disable it
# when using a compiler that may have support for LTO
ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_4_7),y)
UCLIBC_EXTRA_CFLAGS += -fno-lto
endif
UCLIBC_MAKE_FLAGS = \
ARCH="$(UCLIBC_TARGET_ARCH)" \
CROSS_COMPILE="$(TARGET_CROSS)" \
UCLIBC_EXTRA_CFLAGS="$(UCLIBC_EXTRA_CFLAGS)" \
HOSTCC="$(HOSTCC)"
define UCLIBC_KCONFIG_FIXUP_CMDS
$(call KCONFIG_SET_OPT,CROSS_COMPILER_PREFIX,"$(TARGET_CROSS)")
$(call KCONFIG_ENABLE_OPT,TARGET_$(UCLIBC_TARGET_ARCH))
$(call KCONFIG_SET_OPT,TARGET_ARCH,"$(UCLIBC_TARGET_ARCH)")
$(call KCONFIG_SET_OPT,KERNEL_HEADERS,"$(LINUX_HEADERS_DIR)/usr/include")
$(call KCONFIG_SET_OPT,RUNTIME_PREFIX,"/")
$(call KCONFIG_SET_OPT,DEVEL_PREFIX,"/usr")
$(call KCONFIG_SET_OPT,SHARED_LIB_LOADER_PREFIX,"/lib")
$(UCLIBC_MMU_CONFIG)
$(UCLIBC_BINFMT_CONFIG)
$(UCLIBC_AARCH64_PAGE_SIZE_CONFIG)
$(UCLIBC_ARC_PAGE_SIZE_CONFIG)
$(UCLIBC_ARC_ATOMICS_CONFIG)
$(UCLIBC_ARM_ABI_CONFIG)
$(UCLIBC_ARM_BINFMT_FLAT)
$(UCLIBC_ARM_NO_CONTEXT_FUNCS)
$(UCLIBC_M68K_BINFMT_FLAT)
$(UCLIBC_MIPS_ABI_CONFIG)
$(UCLIBC_MIPS_NAN_CONFIG)
$(UCLIBC_SH_TYPE_CONFIG)
$(UCLIBC_SPARC_TYPE_CONFIG)
$(UCLIBC_POWERPC_TYPE_CONFIG)
$(UCLIBC_X86_TYPE_CONFIG)
$(UCLIBC_DEBUG_CONFIG)
$(UCLIBC_ENDIAN_CONFIG)
$(UCLIBC_IPV6_CONFIG)
$(UCLIBC_FLOAT_CONFIG)
$(UCLIBC_SSP_CONFIG)
$(UCLIBC_THREAD_CONFIG)
$(UCLIBC_THREAD_DEBUG_CONFIG)
$(UCLIBC_LOCALE_CONFIG)
$(UCLIBC_WCHAR_CONFIG)
$(UCLIBC_SHARED_LIBS_CONFIG)
endef
define UCLIBC_BUILD_CMDS
$(MAKE) -C $(@D) $(UCLIBC_MAKE_FLAGS) headers
$(MAKE) -C $(@D) $(UCLIBC_MAKE_FLAGS)
$(MAKE) -C $(@D)/utils \
PREFIX=$(HOST_DIR) \
HOSTCC="$(HOSTCC)" hostutils
endef
ifeq ($(BR2_UCLIBC_INSTALL_UTILS),y)
define UCLIBC_INSTALL_UTILS_TARGET
$(MAKE1) -C $(@D) \
CC="$(TARGET_CC)" CPP="$(TARGET_CPP)" LD="$(TARGET_LD)" \
ARCH="$(UCLIBC_TARGET_ARCH)" \
PREFIX=$(TARGET_DIR) \
utils install_utils
endef
endif
define UCLIBC_INSTALL_TARGET_CMDS
$(MAKE1) -C $(@D) \
$(UCLIBC_MAKE_FLAGS) \
PREFIX=$(TARGET_DIR) \
DEVEL_PREFIX=/usr/ \
RUNTIME_PREFIX=/ \
install_runtime
$(UCLIBC_INSTALL_UTILS_TARGET)
endef
# STATIC has no ld* tools, only getconf
ifeq ($(BR2_STATIC_LIBS),)
define UCLIBC_INSTALL_UTILS_STAGING
$(INSTALL) -D -m 0755 $(@D)/utils/ldd.host $(HOST_DIR)/bin/ldd
ln -sf ldd $(HOST_DIR)/bin/$(GNU_TARGET_NAME)-ldd
$(INSTALL) -D -m 0755 $(@D)/utils/ldconfig.host $(HOST_DIR)/bin/ldconfig
ln -sf ldconfig $(HOST_DIR)/bin/$(GNU_TARGET_NAME)-ldconfig
endef
endif
define UCLIBC_INSTALL_STAGING_CMDS
$(MAKE1) -C $(@D) \
$(UCLIBC_MAKE_FLAGS) \
PREFIX=$(STAGING_DIR) \
DEVEL_PREFIX=/usr/ \
RUNTIME_PREFIX=/ \
install_runtime install_dev
$(UCLIBC_INSTALL_UTILS_STAGING)
endef
# Checks to give errors that the user can understand
# Must be before we call to kconfig-package
ifeq ($(BR2_PACKAGE_UCLIBC)$(BR_BUILDING),yy)
ifeq ($(call qstrip,$(BR2_UCLIBC_CONFIG)),)
$(error No uClibc configuration file specified, check your BR2_UCLIBC_CONFIG setting)
endif
endif
$(eval $(kconfig-package))
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